Marcos notes that he's spent a lot of time on it already and there hasn't been a lot of progress since he stopped actively working on it

Jonas thinks we should encourage others to do work on it and watch progress

Replace Messaging/Contacts APIs by DataStore API

We used to have a con-call meeting with W3C editors in the last week and they're hoping don't let apps directly call DataStore API. Instead, Messaging API itself can have its own getMessage()/deleteMessage()/sync()... etc functions to do synchronization.